Seiko Cal. 3891 - 420

The 3891-420 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3891 caliber with 20j jewels beating at 28,800 bph, it delivers a 45 hours power reserve. [seikata-wm-2dedf8c70a4c]

Also known as: Panda, Silverwave

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

8.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Navy

Jewels

20j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1967

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